Secondary collimation knobs

[Starflyer]

I'm doing some 'scope maintenance and I've been scouring the web for some sort of secondary collimation knobs. The secondary holder is a DIY job with bolts attached to the moving part and standard M6 nuts used for adjustment (if that makes any sense).

I'm looking for some sort of tiny female (aluminium?) hand knobs to make adjustment easier. The outer diameter really needs to be 12mm maximum otherwise they'd overhang the side of the holder.

Any suggestions gratefully received as I can't find anything suitable

Cheers,

Ian

[blinky]

Ian,

Have you checked to see if a set of Bob's knobs would do the job?

[Starflyer]

I did have a look on Bob's site but can't see anything with a small enough O/D. Beamish has offered to send me something he thinks fits the bill, so hopefully problem solved

[Milamber]

Hmm... I shall pass then

[beamish]

They're spares from your good self Arthur !

Karlo

[Milamber]

Thought so - it's why I held off when I saw the previous post from Ian. Good to see the spirit going round!

Arthur

[Starflyer]

It looks as though the Karlo/Arthur solution is not going to work, I need nuts and Karlo has bolts, so still searching

Here's a pic of the (homemade) secondary holder, it works really well but I'd really like tool less adjustment.

Cheers,

Ian

[Milamber]

Should be OK - the knobs are for nuts or bolts... unless I sent Karlo the solid ones?

[beamish]

The collars ought to work by themselves as Arthur has suggested ( It didn't occur to me earlier ). I'll send you those Ian !! The collars fit onto the hex head of the bolt so should fit onto the nuts.

Karlo

[Starflyer]

Excellent